Network Setup & Connection Schemes

Schemes

If Business network is also the Plant network

· Connect Smart Arc™ ETH0 to the internal hub.

· Connect WIN ETH0 to the internal hub.

· Connect the internal hub to the network.

· If PLC supports an Ethernet protocol (Modbus TCP, AB Ethernet, GE Ethernet) and it is not available through the main plant network, the Smart Arc™ ETH1 card can be configured as a node on the PLC network, given an IP address is assigned. Connection to the PLC might also be available through Modbus, Profibus, VMEBus or ControlNet.

If Business network is separate from Plant network

· Connect Smart Arc™ ETH0 to plant network (assigned IP address)

· Connect Smart Arc™ ETH1 to either private AMI International local network or if PLC is in a separate ethernet network.

· Connect WIN ETH0 to plant network (assigned IP address)

· Connect WIN ETH1 to business network (assigned IP address)

· Connection to the PLC might also be available through Modbus, Profibus, VMEBus or ControlNet

Direct Connection

· Connect Smart Arc™ ETH0 point to point with the PLC

· Connect Smart Arc™ ETH1 point to point with WIN ETH0

· Connect WIN ETH1 to the plant network (assigned IP Address)

UI Application Installation

UI Application Setup

· Install the prerequisites supplied with the application.

· Map the Win’s IP to the name burnerserver in the hosts file (normally located in C:\Windows\Sytem32\drivers\etc.

· Connect to http://burnerserver/

□ Click on the Download Regulator UI Application hyperlink

· Click on Install

· Launch the UI Application by double-clicking on the Burners icon located in the Windows Start Menu.

Configuration and Operation

This section describes how to configure and operate the regulator using the UI Application.

Each section describes the screen, data and in some cases, the underlying process involved.

The customer can monitor with its own UI Application via Modbus.

For the following sections, we assume the following:

□ You have installed the Chemical Energy Control Module™ System (Hardware, software and UI Application)

□ You already know some concepts of Chemical Energy like Carbon Estimation, Slag Analysis, etc.

□ You are familiar with the Microsoft’s Windows operative system and terms like click, popup, drag & drop, maximize, etc.

Before YOU Start

The Chemical Energy Control Module consists of the regulation software running in one CPU and the UI Application, Web Server and other services in another CPU. They communicate via Ethernet and before connecting the UI Application to the regulator, both machines should be connected in the same LAN or via cross over.

UI Application Description

The Chemical Energy Control Module™ UI Application was designed for the user to interact with either a touch screen or a regular keyboard and mouse.

The operation-related screens contain big buttons to be easily pressed using the fingers while the rest of the configuration screens may not have this feature.

Common Components

Input Button

The input buttons displays data that can be modified when clicking on it. This input buttons can be numerical, alphanumerical or predefined selections.

An input button can be enabled or disabled. Normally when these kinds of buttons are disabled, it indicates that your user level cannot modify its value or it is not available for certain configurations.

Displays

There are two types of displays; numerical and alphanumerical. Both are used to display live data or the configuration in use (some time this configuration is modified by other means).

They are typically preceded by a label of the variable they represent.

Selection Buttons

As the name implies, this buttons are used to select an option or insert some configuration. There are four kinds of selection buttons:

· Primary Action: These buttons perform actions that normally have some effect on the model linked to them, the regulation process or some important action; these buttons are blue or red.

· Secondary Action: These buttons perform actions that normally change o display a view, normally an action that will not affect any model. They use the color light blue.

· Link: These are links to sections or screens. They use the color grey.

· Specials: Some button have special application in the UI Application like switching modes, sending end of heat signals, or they can be used as links and notify some condition, such as an alarm .

Additionally, some buttons may contain a small icon indicating its function.

Note

Depending on the situation or configuration, some buttons can be enabled, disabled, dimmed or hidden

Trend Graphs

It stores the information up to four hours depending of the samples per second configured (See User Preferences) or in other cases one sample per heat.

These graphs are placed in some of the configuration screens to provide feedback of the variables related to it. They are predefined variables and cannot be changed, only hide or displayed as needed using the checkboxes of the specific variable.

This kind of graphs can display up to four different variables sets with different scales/units each.

All the graphs can set specific scales for the displayed value independently or let the UI Application select the optimum scale by pressing the Auto button (See Scaling).

The variables are color-coded; the color in which the variable name is displayed is the color of the corresponding line in the graph. The phases use its standard color and only vary its tone when two variables contain the same phases.

Note

Some options may just be available in certain chart only.

Zoom:

To zoom-in a specific section of the trend, simply Marquee select the desired area. You may zoom several times until the desired detail level is reached. Some graphs have Vertical and Horizontal zoom buttons.

Note

Marquee selecting is the process of clicking-and-dragging the mouse pointer over a group of objects until a dotted line forms a box around it.

Right-click Menu

When you right-click on the graph, a context-sensitive menu will appear with some of the following option:

Option	Action
Display lines stair-step	Shows the curve with the step lines instead of point to point lines
Copy	Sends a duplicate of the graph to the clipboard so you can use it in another location as an image
Save Image As	Stores the graph to an image file
Page Setup	Configures the printing options
Print	Prints the graph
Show point values	When this option is enabled, you can position the mouse over a trend point and a tooltip will show the values for that specific point
Un-Zoom	Reverts to the previous zoom level
Undo All Zoom	Disable all zooms and restores the original state

Scaling Button

All trends graphs displayed in the Data Logging & Monitoring screen can be scaled in two different ways:

· Auto: lets the UI Application adjust the best min and max values to display all the points in the graph

· Min & Max: the user sets the min and max values of the Y-axis scale

· Filter: when selected, the graph is displayed with a low pass filter. The only input needed is the value for “alpha”

· More Options: open a dialog with extended options like limits, units, format or show and hide the axis.

Help Button

To access the help archives every screen contains a help button that will display a pop up screen with the specific help of the screen.

To access other screen help from an already opened window, click on the “Go Home” button and navigation map will appear.

Detach Button

This button will detach the current screen to make two separate screens from the same session. This becomes helpful in two monitors setups, for example if you want to configure some parameters and see the trends at the same time.

The detached screen is always displayed on top of the other.

Notifications Balloon

When a UI Application reads from a Modbus master service in the Windows machine call Data Server and sends a request to the web server, the UI Application displays connection status in its upper right corner.

Asynchronous Process Status

The third led below the line brinks when at least one long process is running in the server. Click this led to show a dialog with the detail of all running process.

A running process may be cancel by click on the cancel button. The cancelation may not take effect immediately.

Screen Navigation

The screen navigation buttons let user move faster to the last visited screen (left row button) or go back to the next screen (right button).

Access Level

There are two access levels and does are shown in the above images. From left to right:

General Access. This is the initial access level, it allows the user to see and manipulate all Operation screens, use Analysis Profile screen and see (not change) some Configuration screens.

Admin Access. This level allows see and manipulate all screens that General Access does but also change Configurations and perform upgrades.

To go back in the access level just click the lock button again.

Keypad

Numerical values are entered using a keypad. The key pad was designed for touch screen usage, as well as the regular keyboard.

There are two types of keypads; one is for entering base 10 numbers, and the other for base 16 numbers (i.e. hardware addresses).

The keypad has a minimum and maximum values that can be entered for that particular variable, those values are displayed in the “Min:” and “Max:” labels. The same is for values that allow negatives or decimals, enabling or disabling the respective key button.

The display shows the actual value, and when a new value is entered, the old one is overwritten. If you just want to change the least significative digits without losing all the number, use the “<-” button to erase one by one until the desired one.

Keyboard

Like the keypad, the keyboard was designed to enter alphanumerical values in a touch screen and with a regular keyboard. The letters are arranged like in a regular QWERTY keyboard, and only some symbols were included for convenience, if additional symbols are needed those can be entered using the conventional keyboard (Some restrictions apply).

The display shows the actual value as in the keypad, but a difference is that when a new value is entered, it does not overwrite the previous; it is appended at the end of this.

· Backspace: erases the last character one by one.

· Clear: erases the entire input.

· Caps Lock: same as in a regular keyboard, but only affects the characters of the keyboard on screen.

· Shift: capitalize only the next character or selects the alternate characters.

Note

The text is masked with * when entering passwords.

Curve Preferences Editor

Many graphs let users change curve preferences such as line color, symbol type or size. In cases, a square at the right of the variable’s name is shown.

Just click the preview square to access the Preferences dialog.

Log On Dialog

At the application startup a Log on dialog is show, the only thing you need to enter is the Windows machine’s IP address, where Chemical Energy Control™ services are running.

If the Show Connection Setting checkbox is unchecked, then the log on dialog will not be show the next time the application runs and will try to connect to the last succeeded IP address automatically.

Variable Selector

A stander variable selector dialog is use in all the application. The design let you quickly locate a variable by browsing it in a group (left list) or by type the name or part of it in the search text box at the top.

Burners variables are a special case, this variables, because the large number of variables related to the burners; variables are group by Variable and Type.

Menu

The Menu button located at the top right of the screen will allow you to go not only the operation screens but also to analysis and configuration.

Startup Parameters

Although UI Application does not need a special configuration to work, it is convenient that Burners and Scraps been enable and named.

Configuration

By default this screen does not let user make any modification, to change configuration you need to enter a master password to get the right access level, just click the Lock button next to the menu.

Once you have entered the master password correctly, the Scraps and Burners taps will be editable.

If user modify any field the modified control will be highlight and Save and Restore buttons will be enabled, the status will change to Modified.

The buttons action is:

· Save: Saves the on screen modifications. Sends model to the Web Server.

· Restore: Revert changes before any save action.

· Reset: Reset the model to default values.

For Burners and Scraps the configurable fields are:

· Label: The user defined name for scrap or burner (depending on Smart Arc™ configuration)

· Enable: Indicate if the scrap or burner will be show in operation screens.

The Operation Costs tab allows you set a factor in order to calculate the cost of the shown variables in the following image. The resultant cost may be seen at the Cost’s fields. The calculated cost for a heat may be seen at the Performance screen.

The Furnace Panels tab let you specify the number of panels of each furnace location; if your furnace don’t has all available locations, just unchek the desired location. Once set the number of panels for a location, you can give a name for each panel, is up to you identify each panel.

System Maintenance

This screen configures the general settings of the Burners System.

Base Data Directory: Directory in the computer to save the logs.

Start Data Time: Start date of the system reading.

Show DRI Weight: In case your plant uses DRI you can customize your HMI to show the DRI Weight in the Furnace Overview.

Hide HMI on Shadow mode: The HMI monitors the current shell shadow mode and hides it if activated.

Variables Configuration

In this screen user has the ability to change the default Unit of Measurement (UOM) among most common units and not only that, Min, Max Step, Format and Limits; LEI for bottom and LES for top. This configuration allows the correct display in charts and screen display controls.

Note

Change the default UOM for many or all variables may deplete performance. This is because UOM conversion is performed by the HMI at run time.

This configuration can be retrieved and stored from and to a Web Server, with the porpoise to be available any user. To do this Use the buttons ‘Save System’ and ‘Load System’ in this way configuration will be stored and retrieved from the Web Server. To use the System default click on ‘System Default’ button.

Note

After any change saved, application will automatically reset.

It is also possible to see Modbus raw values doing click on . It will show a table with the Modbus Address, Path and Value among other properties.

Note

For heats variables (dot per heat); the units column is not available.

Calculated Variables

It might desire to have some calculated variables; well that is possible in this screen.

Let suppose you want to get the Total O2 Flow, to add this new variable just click on New in the Calculated Input Variables (left green list) and enter the expression:

[B1MainO2Flow]+[B2MainO2Flow]+[B3MainO2Flow]+[B1SHROUDFlow]+[B2SHROUDFlow]+[B3SHROUDFlow]

Note

It is possible to drag and drop variables from the available variables list (left for Input and right for Output). If the variables names are typed, they must be wrapped between brackets.

Note

For more information about allowed math functions please refer to http://www.sqlite.org/lang_corefunc.html.

By default all input variables are also listed as output variables, if a calculated variable is just a middle variable and you don’t want to throw it as output variable just select None in the Aggregation property in the Input variables.

Output variables might be grouped by:

· Avg

· Count

· Min

· Max

· Sum

The resultant value is attached to the heat report and might be available in the Heat Performance chart.

There might be some cases where you need to calculate a new variable even after output variables have been grouped by heat; for those cases, you can define a new Calculated Output Variables by defining an expression build with any output variables.

Usage

To edit or remove a calculated variable, do a double click on it, the variable name, expression and aggregation (if case) will be display in the Variable Property section.

After changes were made, just click save/remove. Observe that the background color change depending on la source of the variable is been edited.

It’s easy locate a variable in any list, just tape the name or part of it in the search text box and the matching variables will be display.

In some cases you might want to roll back to the saved configuration, to do this click Reload Saved button. To start a new configuration with all available variables press Reset.

Once the configuration is ready, you can check the resultant XML using the Preview button. Dialog like this will be open.

Finally to save the configuration back to the server press Save Changes.

Note

A basic validation is preformed when configuration is saved, however errors on the configuration might affect the proper functioning. See diagnostics after any change.

Note

Please consider that calculated variables are processed in the server side and it is a heavy load process, so the changes might not be visible immediately.

Note

Its highly recommended validate the changes by clicking the Validate button before save the configuration.

Operation

This section contains the operation and monitoring screens accessible to the operators. These screens contain common operation controls as well as diagnostics views.

Overview

This screen shows a general overview and configuration of the actual operation conditions. In other words, this is the summary of all application screens with the most important indicators; which are useful to the operators. It is also possible to navigate through heats in the past.

The top timeline control let you select the Actual Heat or a past heat. When you select a past heat all display values will change to the last value of the selected heat, also the bottom chart loads the values of that heat. For a past heat the shown value will turn fore color to gray to let you know the value is not a real time value but is the last value of that heat.

Note that, to remove a pencil from chart you need to move the mouse over the pencil and a close button will apear at the corner and to change pencil’s settings do a double click on the variables’ name.

Heat Status

In this section the actual heat status in presented.

Parameter	Concept
Heat Number	The identifier of the current heat.
Charge	The actual charge.
Power On	Total time the furnace has being On in the current heat.
Power Off	Total time the furnace has being Off in the current heat.
Heat MWh	The MWh of the current heat.
kWh/Ton	The kWh per charged ton of material of the current heat.
I²H	Electrode Consumption Index.
Avg SF	Average Arc Stability Index.

Carbon Estimation

In this section the estimation of the actual temperature, bath oxidation and carbon is presented, also the accuracy of the estimation (the labels turn to red for bad, yellow for medium and green for good). The following illustrations are just a sample of the color changes.

Parameter	Concept
Real Temperature	Last temperature sample taken in the current heat.
Real PPM	Last PPM sample taken in the current heat.
Real Carbon	Last carbon sample taken in the current heat.
Estimated Temperature	Current estimation of the temperature in the actual heat.
Estimated PPM	Current estimation of the PPM in the actual heat.
Estimated Carbon	Current estimation of the Carbon in the actual heat.

MgO Saturation

The graph represents the Isothermal Solubility Diagram (ISD), which is used to control the MgO Saturation of the slag. The saturation zone is the one with the “MW+L” label, to have a very good foaming and reduce refractory wear is recommended to work within the yellow zone of the chart below (around 1% of MgO super saturation). If we are working below this zone (in the blue zone) the slag will be very liquid and the foaming will not be very good, the same happens if we are working above this zone because the slag becomes very stiff.

Slag Analysis

The slag composition presented in this screen is estimated for the actual heat, but if the user selects slag performance it will show the composition of the sample of the heat selected.

Parameter	Concept
Temperature	Estimated temperature of the current heat, or temperature of the slag sample.
MgO Sat	MgO Stauration.
MgO SatDiff	Difference from the MgO Saturation calculated and the MgO estimated of the current heat or from the slag sample.
B3 Ratio	Relation CaO/( Al₂O₃,+SiO₂+ TiO₂)
Slag Quantity	Estimated quantity of slag in the actual heat.
Slag Energy	Estimated energy absorbed by the actual slag quantity in kWh per ton of steel.
Acids	Quantity of Al₂O₃, SiO₂ and TiO₂ in the actual heat.
FeO + MnO	Target sum of percentage of FeO and MnO in the slag.
MgO SupSat	Target of MgO super saturation, if for example the super saturation target is 1%, the MgO percentage in the slag will be 1% above the current saturation.

Trends

A trends chart is presented at the bottom of the screen; all heat variables are available for selection. The chart may also be changed to Scatter or Histogram.

Burners Operation

This screen is useful to visualize the actual operation of the burners, the profiles from the Chemical Energy Control Module are more flexible than a typical burner programs, allowing changing burner modes based on information about the actual furnace conditions like heat stage detection, slag conditions, energy input, and the outputs of the Carbon-Oxygen Balance sub-module.

Available Burners

In this section the user is capable to decide which burners want to visualize in the graphs below.

Burner Variables

In this section, the user is capable to decide which variables want to be displayed in the graphs, per every burner.

Parameter	Concept
Set Point	Reference that the SmartArc is sending to the burner, for oxygen, gas, carbon and lime.
Flow	Actual flow in the burner, for oxygen, gas, carbon and lime.
Consumption	Actual consumption in the burner, for oxygen, gas, carbon and lime.
FreeO₂	Is the freeO₂calculated for every burner. For more information see Carbon Estimation section.
Gas MWh	Actual MWh delivered for every burner, based on gas consumption.

Heat Variables

In this section, the user is capable to decide which variables from the heat want to be displayed.

Parameter	Concept
S.F. Avg	The Stability Factor of the current heat
kWh/Ton	Electrical energy input per every ton of charged material of the current heat.
MWh	Electrical energy input in MWh of the current heat.

It is also possible to navigate among heats by using the navigation controls at the top of the screen.

Carbon estimation

This module estimates the oxidation of the steel bath. The estimation is then used to determine the best timing for start/stop of the oxygen lances or to change the oxygen and carbon flows. Its goal is to reduce delays caused by decarburization or oxidation requirements at the end of the heat, and optimize the use of oxygen and minimize the FeO content in the slag. When the carbon content sample is available, the module self-adjusts its parameters to improve its estimations.

Scrap Mix

Parameter	Concept
Total Weight	Represent the total charged materials in the furnace in tons.
Type	Identifies the materials charged.
Weight	Tons of material.
%	Percentage from the total charged

Composition

Helps to identify the quantity of materials (silica, manganese and carbon), which demand oxygen, and came with the scrap mix. Also the charge density is presented.

Fuels

Parameter	Concept
Scrap Si	Represents the theoretical demand of oxygen from silica in the scrap.
Scrap Mn	Represents the theoretical demand of oxygen from manganese in the scrap.
Scrap C	Represents the theoretical demand of oxygen from carbon in the scrap.
Charge C	Represents the theoretical demand of oxygen from carbon charged in the bucket.
Top Feed C	Represents the theoretical demand of oxygen from carbon charged from the roof.
C injected	Represents the theoretical demand of oxygen from carbon of the injectors.
Gas Injected	Represents the theoretical demand of oxygen from gas of the burners.
Total	Total oxygen demand from fuels.

Free O¿

Parameter	Concept
Total O₂ Injected	Total oxygen injected in scf per charged ton of material.
Total O2 Required	Total oxygen demand from fuels in scf per charged ton of material.
Free O₂/Ton	Total O₂Required - Total O₂ Injected

Estimation

This part of the screen helps to visualize how the estimation of PPM, Carbon in the Bath and Steel Temperature is working.

User can filter the number of samples by entering a value largest than zero.

It is normal that first heat estimation could be some loose, in this cases user may want filter those estimations, in this case checking Include First Sample will dismiss all first heat estimations.

The next graph represents a trending of the last samples, the real and estimated values.

The next graph represents a scatter of the last samples, in the y-axis is the PPM, Carbon or Temperature estimation and in the x-axis the real value, helping to visualize the accuracy of the estimation.

Energy balance

This sub-module provides a balance of the energy inputs and outputs which helps to visualize the energy distribution, and where does the energy goes when a change on the burners profile is done. This sub-module is responsible for the temperature estimation. It also helps to measure the efficiency of the chemical energy usage while modifying the operation practices. The system also keeps a history of the energy input and output distribution for comparison through time.

The screen is subdivided in two sections one called “Energy In & Out” and the other “Energy Charts”.

Energy In

Parameter	Concept
Electrical	Total electrical energy in kWh per steel ton.
Chemical	Total chemical energy in kWh per steel ton.
Mn	Chemical energy from manganese oxidation.
Si	Chemical energy from silica oxidation.
Fe	Chemical energy from iron oxidation.
Al	Chemical energy from aluminum oxidation.
C Charge	Chemical energy from the oxidation of carbon charged in the bucket.
C Top Feed	Chemical energy from the oxidation of top feed carbon.
C Injected	Chemical energy from the oxidation of carbon injected.
C Electrodes	Chemical energy from the oxidation of electrodes carbon.
Gas	Chemical energy from the oxidation of gas injected.
Unaccountable	Energy in, which could not be accounted but is used to adjust the energy balance.

Parameter	Concept
Metal	Energy absorbed by the metal in kWh per ton of metal.
Slag	Energy absorbed by the slag in kWh per ton of steel.
Off Gas	Energy losses by the off gas in kWh per ton of steel.
WC Panels	Energy losses by the water cooled panels in kWh per ton of steel.
Side Walls	Energy losses by water of the side walls panels in kWh per ton of steel.
Roof	Energy losses by water of the roof panels in kWh per ton of steel.
Duct	Energy losses by water of the duct panels in kWh per ton of steel.
Unaccountable	Energy out, which could not be accounted but is used to adjust the energy balance.
Efficiency	Ratio between energy in and energy that goes to the metal.

Energy Out

Energy Charts

In this screen user can query today’s data, week to date, month to date or even year to date, or can select a custom date range.

Trends

This chart shows the trends of the different sources of energy contribution and losses, helping to trace the effect of any modification on the operational practices on the energy distribution.

Gas Efficiency

This chart shows the effect that gas injected has on the total electrical energy consumption per heat, the effect of the gas could be seen in different stages of the heat (preheating, melting, melting + preheating and total gas).

Slag Analysis

For the slag analysis it is required to have a slag analyzer available. This screen based on slag chemical analysis recommends quantity of fluxes that should be added to the furnace in order to reach an optimum MgO saturation level in the slag, improving the slag foaming, arc stability and refractory protection. The system also generates comprehensive graphics of the history data, allowing users to decide what is the best target for the slag basicity. These estimations are critical to achieve a high performance operation, minimizing FeO content in the slag and the losses in energy required to create the slag.

The screen is composed of two sections, Slag Analysis and Slag Performance, the first one is based on information of the heat and estimations, the second one is for heats where a slag sample was took.

MgO Saturation

The slag composition presented in this screen estimate for the actual heat, but if the user selects slag performance it will show the composition of the sample of the heat selected.

Parameter	Concept
Temperature	Estimated temperature of the current heat, or temperature of the slag sample.
MgO Sat	MgO Stauration.
MgO SatDiff	Difference from the MgO Saturation calculated and the MgO estimated of the current heat or from the slag sample.
Iron Losses

Heat Trends

This chart shows the trending of some of the indicators of the last heats (one point per heat), it helps to visualize how B3 ratio, %FeO in slag, kWh/Ton, MgO Diff has variated in a certain period of time.

Parameter	Concept
Charge Number	Current charge number.
Lime Charged	Total lime charged in the actual heat.
Dolo Charged	Total dolomite lime charged in the actual heat.
Acids	Quantity of Al₂O₃, SiO₂ and TiO₂ in the actual heat.
B3 Ratio	Relation CaO/( Al₂O₃,+SiO₂+ TiO₂)
Slag Quantity	Estimated quantity of slag in the actual heat.
Slag Energy	Estimated energy absorbed by the actual slag quantity in kWh per ton of steel.

Slag Fluxes

Targets

Parameter	Concept
B3 Target	Target basicity for the current heat.
FeO + MnO	Target sum of percentage of FeO and MnO in the slag.
MgO SupSat	Target of MgO super saturation, if for example the super saturation target is 1%, the MgO percentage in the slag will be 1% above the current saturation.

Parameter	Concept
Lime	Recommended quantity of lime in lb for the current heat.
Dolo	Recommended quantity of Dolomite Lime in lb for the current heat.
Slag Quantity	Quantity of slag that will be produced with the current recommendation of fluxes.
Slag Energy	Energy absorbed by the slag in kWh per ton of steel.

Recommended

Slag Performance

The Slag Performance chart is created from those heats where a slag sample was took. To create this charts the X axis is created by ranges (bins) of MgO Saturation or B3 Ration values of slag samples. The retrieved data may be filtered a Step, Min and Max, or any other criteria. To see original data chart click on Source Chart button.

Performance

This screen is used to monitor the current heat, and view the history of the most important indicators of past heats.

Heat Trends

This chart shows the trending of some of the indicators of the last heats (one point per heat), for example it helps to visualize how energy, power on time, and the consumption of carbon, gas and oxygen has varied in a certain period of time. It is also possible to define your own set of variables, just select “Custom” at the top left combo box, select variables and give them a name and save it; the new pencils set will be show and added to the combo box.

It is also possible to open in a new window the Heat Trends chart, consider that the selected span time of data is shared between dechated and original chart, but not selected pencils.

Detach chart

Heat Status

Parameter	Concept
Master Program	The actual Master Program
Charge	The actual charge.
Power On	Total time the furnace has being On in the current heat.
Power Off	Total time the furnace has being Off in the current heat.
Heat MWh	The MWh of the current heat.
I²H	Electrode Consumption Index.
Heat Avg MW	The average power input.
Heat kWh per Ton	The kWh per charged ton of material of the current heat.
Avg SF	Average Arc Stability Index.
Free O₂/ton	Total O₂/ton - Total O₂ Req/ton

Energy

Parameter	Concept
In	Total energy feed into the furnace in kWh per steel ton, electrical plus chemical.
Electrical	Total electrical energy in kWh per steel ton.
Chemical	Total chemical energy in kWh per steel ton.
Unaccountable	Energy in, which could not be accounted but is used to adjust the energy balance.
Metal	Energy absorbed by the metal in kWh per ton of metal.
Slag	Energy absorbed by the slag in kWh per ton of steel.
Off Gas	Energy losses by the off gas in kWh per ton of steel.
WC Panels	Energy losses by the water cooled panels in kWh per ton of steel.
Unaccountable	Energy out, which could not be accounted but is used to adjust the energy balance.

Heat Composition

Parameter	Concept
Heat Weight	Represent the total charged materials in the furnace in tons and percentage.
DRI Weight	The total charged DRI in the furnace as well as the percentage.
Scrap	Current scrap mix percentage of silica, manganese and carbon.

Operation Costs

Parameter	Concept
MWh	The consumption and cost of MWh in the heat.
O₂	The total consumption and cost of O₂in the heat.
Gas	The total consumption and cost of Gas in the heat.
Carbon	The total consumption and cost of`Carbon in the heat.
Lime	The total consumption and cost of Lime in the heat.
Dolo	The total consumption and cost of Dolo in the heat.

Carbon Estimation

Parameter	Concept
Sample Temperature	Last temperature sample taken in the current heat.
Sample PPM	Last PPM sample taken in the current heat.
Sample Carbon	Last carbon sample taken in the current heat.
Estimated Temperature	Current estimation of the temperature in the actual heat.
Estimated PPM	Current estimation of the PPM in the actual heat.
Estimated Carbon	Current estimation of the Carbon in the actual heat.

The Timeline button let user search a heat quickly. It shows a one-week timeline. The up-right calendar let user move among weeks, months and event years faster. The up and down blue rows make a one-week jump forward or backward. The up and down green rows make a one-day jump. Just click the heat for selection.

If user needs to see heat data in a chart the Heat Chart button will show the following chart dialog.

General heat information is show at the top of the dialog. There are tree chart types.

· Trend: Use only a time X axis. By default, curves are show as lines.

· Scatter: Let user choose any X axis available in the Pencil Set panel. By default, curves are show as symbols.

· Histogram: The X axis is automatically measured and divided in 40 bins. By default, curves are show as line and symbol.

To add variables to the graph just click in the Plus button, a Variable selector dialog shows all available variables grouped by object.

Variables can be grouped Logically, for example if you want to chart all burners Gas Consumption it may be a lot of work to select each burner Gas Consumption instead you just select Gas Consumption in the Logical grouped list and all burners variables will be added to the chart with only one Y axis and scale.

The right-top row button, expand the dialog to show a complete list of available variables. It is also possible to search a particular variable by typing part of its name in the Search text box.

Once you have a chart with all your preferences such as variables, colors, chart type and scales; it is possible to save them, just click in the left dock Options label to show Load and Save options.

If you need to filter charts data go to Options panel and mark the Filtering options checkbox. A “Filter By” panel will be show at the bottom of the chart, press plus button to add a new condition. For example to define a filter that show samples with MWh greater or equal than 10 MWh.

You can add as much conditions as you need, Condition may be connected by OR or AND operator in order to create complex expressions; there are also open and close parenthesis to create even more complex expression, just click the button “(“ to rotate to other symbol. To delete a condition just click the minus button at the right.

If the created expression has a syntaxes error, the expression string at the bottom will show you the error.

Alarms

This screen shows notification of the activity of the system as well as global system malfunction and critical condition.

The Alarms button flashes when a new alarm is raise, the blinking color depends on the Priority of the alarm. To stop button flashing, just click the Alarm button.

Press “shift” key + “Alarms” button to show the screen in full screen showing the inner data column.

In this window, you can sort by any of the columns and scroll thru all the messages.

You can export these messages to an excel file with the “Export” button.

There is a hidden column called inner data, you can bring this column to view by clicking on any message while holding down the shift key. Alternately place the mouse pointer over the date of the desired message and a tool tip will display the inner data info if exists in that particular message.

Abnormal Vapor

This screen not only shows automatic abnormal vapors detections but also let you report new events and set them fix.

You can use the Heat Navigator at the top of the screen just like other screens to locate a desired heat. This control has also a backward and forward navigation buttons for Events in order to move through them. When a heat has an Abnormal Vapor Event (AVE) is shown with a specific color depending on its status; the following are the available status colors.

Event Detected

First Sight, Seen and Fixed (Not detected)

First Sight, Seen and Fixed (Detected)

Fixed

Heat without event

By holding the mouse over a heat, a tooltip will show the basic information of the heat and event.

There are two ways to create an AVE record. Just locate the desired Heat and select one of the following options.

· First Sight - Most used in the Actual Heat when a abnormal vapor is sight for first time and was not fixed.

· Seen and Fixed – When an event has seen and fixed at the same heat.

Any of previous options will open a dialog where you can give more detail of the location of the abnormal vapor, just as shown in the following image.

Note

See Furnace Panels at Configuration section to configure number and label of the furnace panels.

To set an AVE as fixed, you need to locate the event using the Navigation control, once located and selected click the Fix button at the Event Detail panel, a dialog will open, showing the Heat where the AVE was created (not editable) and the Heat where it was fixed; it is also possible to change the details of the event.

To edit a AVE just click the Edit Event button at the Event Detail panel, a dialog will open showing the detail of the event. It is possible to change the Heat Number where the event was created.

At the bottom of the screen, you can find a trend chart of the H2O (%), H2O Estimation (%) and the Abnormal Vapor Alarm signal, this trend will help you see the level of the water and if there is some lost. Finally, there is a count of events for Day, Week and Month.

To export the report of heats between two dates and its abnormal vapor events, click the Export Events button and specify the date range; a CSV file will be generate with the historic information.

Analysis

This section contains the analysis screens, where users may join data and customize charts for study.

Analysis Profile

This screen allow user to define one or more charts from up to tree types of data sources; charts may be arrange in a grid to show one, two or four charts at the time. A set of data sources and charts is known as an Analysis Profile.

The main controls allow you to Create new, Open, Save (Web Server by default) or Save As an Analysis Profile. The charts layout may be Single, Split or Four Charts view.

The Profile tab allows you to set the profile name, just click on edit button at the right of the list, set a description and view the selected data sources. If you want to remove a data source just select it from the list and click on the trash button, if the data source has charts bounded you will be cuestion about to remove the related charts.

Tip

A double click on any Data Source listed will show up the Data Source Settings panel.

Data Sources

You may want to use data from the available sources.

· Heat Trends. One dot per heat.

· Heat Log. 2 seconds logs from a single heat.

· Rph/Rpd/Rpm. External data files.

Heat Trends

One dot per heat. This data source will get data from a range of dates. It may be Today, Year to Date, Month to Date, Week to Date or a Custom date range. You may also define the scale of available variables or define a filtering expression.

Heat Log

2 seconds logs from a single heat. This is like a heat chart, you can browse heats by the rows; left for previous heat and right for next heat. If you prefer you can use the time line browser to select a heat, just click the Timeline button. You may also define the scale of available variables or define a filtering expression.

Rph/Rpd/Rpm

External data files. Just click on the big open button at the left and select valid files; all selected files must have the same extension: rph, rpd or rpm; the available variables are taken form the first selected file. You may also define the scale of available variables or define a filtering expression. When rph files are selected you can browse among files using the arrow buttons; otherwise, for rpd or rpm all selected files are loaded at once in a single set of data.

It is also possible to see source data in a grid fashion view, just click in the Show Data button in any Data Source Setting panel. Please note that only selected variables will be loaded (data retrieved from source) and are the only shown in the grid; data might not be filtered here, but they can be selected and copied in the clipboard.

Chart Settings

All charts are available to select by click on the title bar or close them using the cross button. To set or change the title, just do a double click on the title bar. The following figure shows you all available options to customize a single chart.

The plus button allows you to add a variable, the clean button will remove all previously added variables. A set of variables can be saved and loaded using Load and Save buttons. The available chart types are: Trend, Scatter, Histogram, Distribution and XYColor. You could also export chart data and define scales, the defined scales at the chart level will overwrite the scales defined at the Data Source level.

For Regression lines click on More Options button; the following dialog will let you select the variable over which the regression will be calculated and the regression type.

The regression information will be shown at the buttom of the chart.

Sometimes is usefull to have an statistic report of a variable; there are two ways to get this: by ricgt click over the cuve of right click over the scale of the desired variable and selecting the Curve Statistics option on the context menu; a dialog will be open with the statistic information.

Special Charts

The Distribution chart is available only in the Analysis Profile screen, the X Axis variable is distributed among 50 bins in order to create the chart and presented as bars and additional variables are overlap as lines.

Multi-variable Distribution chart

This is a special option available only at any Analysis Profile Data Source options. What it does is to create groups depending on the different values of the Group By variable for each variable listed

The following image shows two grouped variables for HeatMWh when ActualPwrLvl is 6 and 10.

Note

Any change in the Grouping options will cause to drop any created chart in the same Data Source. This is because data need to be re-grouped and series may not be the same.

Administration and Maintenance

System Upgrade

This screen allows the user to perform an upgrade of the Chemical Energy Control Module (Windows machine).

Before you can try to upgrade system, you need to enable edition in the Configuration screen by clicking in the Lock button and type the master password.

Once you have entered the master password correctly, the Upgrade tab will be show. Select the upgrade file using the select button, and press the upgrade button to start the process. The input only allows zip and tgz (*.tar.gz) files with valid data to be sent as upgrade.

Special consideration when upgrading the system:

1. This procedure should be done with the furnace OFF.

2. Some expected network disconnections will occur in the process, but if after a considerable amount of time there is no reconnection, a system reboot should be performed.

3. If the process was successful then the Chemical Energy Control Module system will restart with the upgraded software, if not the system may restart with the previous software.

4. After an upgrade it is recommended to restart the Windows machine to ensure a fresh installation is being run.

5. For any other issues not described here contact AMI-GE Tech Support.

Preferences

This screen allows the user to change the User Interface language, set a heat number prefix and define the minimums number of digits when a heat number is display.

The Screen Settings section let you export the state of all screens (selected variables and its preferences for charts, etc) to a binary file. In the same way you can import a screen settings file to the application.

Chemical Energy Control Module Website

The main function of the website is to provide access to the Chemical Energy Control web services via a browser.

Download UI Monitoring Application

Click the install button to download and install the latest UI Application. The page displays the name, version and publisher of the application.

This feature utilizes ClickOnce technology, and it is designed to work easily with Microsoft Internet Explorer.

Help Provider

Displays the same information found in the help screens of the UI Application,

Heat Sheets

Displays the stored heat sheets, by default the page shows today’s data.

Click on the link of the corresponding heat sheet to display its contest at the end of the page. The format is Heat Number @ date time.

Select a different date from the calendar to get older heat sheets.

Troubleshooting

Modbus connection led is off

· Check if Windows machine is reachable by name (burnerserver, see hosts file). It is possible that the Burners Data Server windows service been corrupted, in this case just restart the windows service in the Windows machine. Close and open the UI Monitoring application.

Appendix

Communications Maps

VME Configuration

Configure the VME windows start addresses, and the swap bytes flag.

Inputs Mapping

Object: TapStatus

Licenses

This section contains the licenses for third party components used in the Chemical Energy Control Module Regulator as a reference.

NModbus

What is it?

-----------

NModbus is a C# 2.0 implementation of the Modbus protocol.

More information at the NModbus project web site http://nmodbus.com/

The Latest Version

------------------

The latest binary distribution can be found on the NModbus project web site http://nmodbus.com/

The latest source for the project can be found at the NModbus project's google code page http://code.google.com/p/nmodbus/

Documentation

-------------

Documentation is available in chm format (NModbus.chm)

License

-------

Permission is hereby granted, free of charge, to any person obtaining a copy of this software

and associated documentation files (the "Software"), to deal in the Software without restriction,

including without limitation the rights to use, copy, modify, merge, publish, distribute,

sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial

portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT

NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

NTP License

Please carefully read all of the terms and conditions and make sure you fully understand them. If you are in doubt, you should seek professional legal advice (e.g. from a lawyer). This document refers to a software package consisting of three major parts:

The NTP Reference Implementation

Included is a precompiled ("binary") version of parts of the NTP reference implementation provided by the Network Time Protocol Public Services project.

The NTP software distribution is copyrighted, as described in the NTP copyright page. At the time this document was written, this page contained the following copyright notice:

NTP Copyright Notice:

***********************************************************************

* *

* Copyright (c) David L. Mills 1992-2005 *

* *

* Permission to use, copy, modify, and distribute this software *

* and its documentation for any purpose and without fee is hereby *

* granted, provided that the above copyright notice appears in all *

* copies and that both the copyright notice and this permission *

* notice appear in supporting documentation, and that the name *

* University of Delaware not be used in advertising or publicity *

* pertaining to distribution of the software without specific, *

* written prior permission. The University of Delaware makes no *

* representations about the suitability this software for any *

* purpose. It is provided "as is" without express or implied *

* warranty. *

* *

***********************************************************************

OpenSSL

The installer installs (upon request - this is turned on by default) a precompiled ("binary") version of parts of the OpenSSL distribution, which is created and maintained by the OpenSSL Project.

The OpenSSL toolkit stays under a dual license, i.e. both the conditions of the OpenSSL License and the original SSLeay license apply to the toolkit. You can read the actual version of the license on the OpenSSL license page. At the time this document was written, this page contained the following license:

OpenSSL License and copyright notice:

LICENSE ISSUES

==============

The OpenSSL toolkit stays under a dual license, i.e. both the conditions of

the OpenSSL License and the original SSLeay license apply to the toolkit.

See below for the actual license texts. Actually both licenses are BSD-style

Open Source licenses. In case of any license issues related to OpenSSL

please contact openssl-core@openssl.org.

OpenSSL License

---------------

/* ====================================================================

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in

* the documentation and/or other materials provided with the

* distribution.

* 3. All advertising materials mentioning features or use of this

* software must display the following acknowledgment:

* "This product includes software developed by the OpenSSL Project

* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

* endorse or promote products derived from this software without

* prior written permission. For written permission, please contact

* openssl-core@openssl.org.

* 5. Products derived from this software may not be called "OpenSSL"

* nor may "OpenSSL" appear in their names without prior written

* permission of the OpenSSL Project.

* 6. Redistributions of any form whatsoever must retain the following

* acknowledgment:

* "This product includes software developed by the OpenSSL Project

* for use in the OpenSSL Toolkit (http://www.openssl.org/)"

* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR

* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

* OF THE POSSIBILITY OF SUCH DAMAGE.

* ====================================================================

* This product includes cryptographic software written by Eric Young

* (eay@cryptsoft.com). This product includes software written by Tim

* Hudson (tjh@cryptsoft.com).

Original SSLeay License

-----------------------

* This package is an SSL implementation written

* by Eric Young (eay@cryptsoft.com).

* The implementation was written so as to conform with Netscapes SSL.

* This library is free for commercial and non-commercial use as long as

* the following conditions are aheared to. The following conditions

* apply to all code found in this distribution, be it the RC4, RSA,

* lhash, DES, etc., code; not just the SSL code. The SSL documentation

* included with this distribution is covered by the same copyright terms

* except that the holder is Tim Hudson (tjh@cryptsoft.com).

* Copyright remains Eric Young's, and as such any Copyright notices in

* the code are not to be removed.

* If this package is used in a product, Eric Young should be given attribution

* as the author of the parts of the library used.

* This can be in the form of a textual message at program startup or

* in documentation (online or textual) provided with the package.

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* 3. All advertising materials mentioning features or use of this software

* must display the following acknowledgement:

* "This product includes cryptographic software written by

* Eric Young (eay@cryptsoft.com)"

* The word 'cryptographic' can be left out if the rouines from the library

* being used are not cryptographic related :-).

* 4. If you include any Windows specific code (or a derivative thereof) from

* the apps directory (application code) you must include an acknowledgement:

* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

* SUCH DAMAGE.

* The licence and distribution terms for any publically available version or

* derivative of this code cannot be changed. i.e. this code cannot simply be

* copied and put under another distribution licence

* [including the GNU Public Licence.]

The Meinberg Installer for NTP on Windows itself

The above components are combined in an installer application created by Meinberg Radio Clocks, Germany by using the Nullsoft Scriptable Installation System (NSIS) from, well, Nullsoft, Inc..

This installer application (not NSIS itself) is coprighted like described below:

Meinberg Installer for NTP on Windows Copyright Notice:

***********************************************************************

* *

* Meinberg Funkuhren *

* Werner Meinberg *

* Auf der Landwehr 22 *

* 31812 Bad Pyrmont *

* Germany *

* *

* http://www.meinberg.de info@meinberg.de *

* *

* Permission to use, copy, modify, and distribute this software *

* and its documentation for any purpose and without fee is hereby *

* granted, provided that the above copyright notice appears in all *

* copies and that both the copyright notice and this permission *

* notice appear in supporting documentation, and that the name *

* Meinberg Funkuhren (Meinberg Radio Clocks) *

* not be used in advertising or publicity pertaining to distribution *

* of the software without specific, written prior permission. *

* Meinberg Funkuhren makes no representations about the suitability *

* of this software for any purpose. It is provided "as is" without *

* express or implied warranty. *

* *

***********************************************************************

The License for NSIS - which we warmly recommend, as it is a powerful installation creator plus it's open sourced and free - can be found on the NSIS License page, but this license only applies to the Installation Creator, not to the products that are produced with it (like the Meinberg Installer).

RichTextEditor.NET License

Properly licensed by AMI International

Distribution of RichTextEditor.NET component is Royalty Free.

SharpZipLib License

The library is released under the GPL with the following exception:

Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination.

As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

Note The exception is changed to reflect the latest GNU Classpath exception. Older versions of #ziplib did have another exception, but the new one is clearer and it doesn't break compatibility with the old one.

Bottom line In plain English this means you can use this library in commercial closed-source applications.

http://sharpdevelop.net/OpenSource/SharpZipLib/Default.aspx

ADO.NET 2.0 SQLite Data Provider License

Version 1.0.48.0 December 28, 2007

Using SQLite 3.5.4

Written by Robert Simpson (robert@blackcastlesoft.com)

Released to the public domain, use at your own risk!

Official provider website: http://sqlite.phxsoftware.com

The latest version can be downloaded here

ZedGraph License

ZedGraph is licensed under the Lesser or Library General Public License. This license was chosen to provide flexibility to the potential users of ZedGraph, while also protecting ZedGraph for the greater good. Under the LGPL license, if you make modifications to the ZedGraph code itself, you MUST make those source code changes publicly available if you want to distribute any application that uses the modified code. Note that this only applies to changes made to ZedGraph itself, not to your own application that uses ZedGraph. The reason for this requirement is to encourage users of ZedGraph (which is provided free of charge) to contribute back to the project if they make improvements. This distribution requirement can be handled in several ways:

Provide access to the modified code on the web yourself

Convince the ZedGraph authors to modify the main ZedGraph source code

Submit a code patch to the ZedGraph Patches Tracker and provide a reference link to that location

Can I use ZedGraph in a commercial application?

Many people are concerned that ZedGraph license terms may require you share your proprietary code if you use ZedGraph with a commercial application. This is not the case. The LGPL only applies to ZedGraph itself -- normally your code would just be "a work that uses the library" (see LGPL Section 5).

The key issue in the LGPL is section 5, which states:

(LGPL Section 5) A program that contains no derivative of any portion of the Library, but is designed to work with the Library by being compiled or linked with it, is called a "work that uses the Library". Such a work, in isolation, is not a derivative work of the Library, and therefore falls outside the scope of this License.

This makes it clear that your code can remain separate, and is not necessarily a derivative work of ZedGraph just because it uses ZedGraph. However, the following (also in section 5) applies:

(LGPL Section 5) However, linking a "work that uses the Library" with the Library creates an executable that is a derivative of the Library (because it contains portions of the Library), rather than a "work that uses the library". The executable is therefore covered by this License. Section 6 states terms for distribution of such executables.

This statement complicates things a bit -- using ZedGraph with your code makes the executable itself be a derivative work of ZedGraph. In order to distribute code in this manner, the user has to be able to modify zedgraph and relink it with your code. So long as you dynamically link to zedgraph (e.g., just use the zedgraph.dll), this is not a problem. If you make a static link to zedgraph, then you must also provide some mechanism by which an edited zedgraph can be relinked to your executable.

Just to keep it simple, I highly recommend that you do not statically link with ZedGraph (e.g., include the ZedGraph source code into your project). So long as you dynamically link with ZedGraph (e.g., just reference zedgraph.dll), then your executable module is a separate work from ZedGraph and it just remains a "work that uses the library".

NTP License

***********************************************************************

* *

* Permission to use, copy, modify, and distribute this software and *

* its documentation for any purpose with or without fee is hereby *